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Working on allocator

This commit is contained in:
Adrien Bourmault 2020-01-18 12:50:36 +01:00
parent 6a498c2d08
commit ded1e99fb9
3 changed files with 66 additions and 25 deletions
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2
include/mm/paging.h
View File

@ -33,7 +33,7 @@
#define KPAGESIZE (4 * KB)
#define UPAGESIZE (4 * KB)
#define USERSPACE 0x100000000
#define USERSPACE 0x200000000
//----------------------------------------------------------------------------//

11
kaleid/kernel/mm/paging.c
View File

@ -201,6 +201,10 @@ void MmInitPaging(void)
MmPT[index] = (ulong)curAddrPT | PRESENT | READWRITE;
MmPhysicalPageTable[xedni] = (ulong)curAddrPT;
}
else {
MmPT[index] = (ulong)0;
MmPhysicalPageTable[xedni] = (ulong)0;
}
}
}
}
@ -292,7 +296,12 @@ void MmMapPage(void* virtualAddr, void* physicalAddr, ulong flags)
{
pte_t *page = MmGetPageDescriptorFromVirtual(virtualAddr);
*page = ((ulong)physicalAddr & ~((KPAGESIZE - 1) | NX)) | flags;
DebugLog("Request %p:%p with %lu\n", virtualAddr, physicalAddr, flags);
DebugLog("Page (at %p) %p : was %p\n", &page, page, *page);
*page = (ulong)physicalAddr | flags;
DebugLog("Page (at %p) %p : is %p\n", &page, page, *page);
MmPhysicalPageTable[(ulong)physicalAddr
/ ((ulong)KPAGESIZE)

54
kaleid/kernel/mm/palloc.c
View File

@ -158,7 +158,7 @@ ulong MmAllocPageFrameEx(void ***frameListPtr, size_t *pageNumber, size_t size,
ulong phRamSize = memoryMap.freeRamSize + memoryMap.nonfreeRamSize;
//DebugLog("Allocating %d pages...\n", *pageNumber);
if (contiguous) {
for (void *curPage = (void*)(MmPhysLastKernAddress + KPAGESIZE); curPage < (void*)phRamSize; curPage += KPAGESIZE) {
if (!isPageBusy(curPage)) {
(*frameListPtr)[curNumber] = curPage;
@ -174,6 +174,17 @@ ulong MmAllocPageFrameEx(void ***frameListPtr, size_t *pageNumber, size_t size,
if (!inBlock)
curNumber = 0;
}
} else {
for (void *curPage = (void*)(MmPhysLastKernAddress + KPAGESIZE); curPage < (void*)phRamSize; curPage += KPAGESIZE) {
if (!isPageBusy(curPage)) {
(*frameListPtr)[curNumber] = curPage;
//DebugLog("Select page : %p\n", curPage);
if (++curNumber >= *pageNumber) {
break;
}
}
}
}
if (curNumber != *pageNumber) {
KeStartPanic("MmAllocPageFrameEx() : No more free pages to allocate");
@ -236,8 +247,8 @@ error_t MmMapPageFrame(ulong id, void *virtAddr, ulong flags)
}
if (id == busyPage->id) {
DebugLog("Map %p at %p\n", busyPage->phyAddress, virtAddr + offset);
MmMapPage((void*)((ulong)virtAddr + offset), busyPage->phyAddress, flags);
//DebugLog("Map %p at %p\n", busyPage->phyAddress, virtAddr + offset);
offset += KPAGESIZE;
}
}
@ -285,18 +296,39 @@ error_t MmTestBusyPage(void)
/* } */
ulong a = KeGetTicks();
tab[j++] = MmAllocPageFrame(50*MB, NORMAL);
tab[j++] = MmAllocPageFrame(50*MB, NORMAL);
tab[j++] = MmAllocPageFrame(50*MB, NORMAL);
tab[j++] = MmAllocPageFrame(50*MB, NORMAL);
tab[j++] = MmAllocPageFrame(50*MB, NORMAL);
DebugLog("Start alloc : %lu s\n", a/1000);
tab[j++] = MmAllocPageFrame(30*MB, NORMAL);
ulong b = KeGetTicks();
DebugLog("Alloc time per MB : %lu\n", (b-a)/5/5);
//printBusyPages();
DebugLog("End alloc : %lu s\n", b/1000);
DebugLog("Alloc time : %lu s\n", (b-a)/1000);
DebugLog("Alloc : %d; Free : %d; Count : %lu Mo\n", NSuccessfulAlloc, NSuccessfulFree, MmBusyPagesSpace() / MB);
a = KeGetTicks();
DebugLog("Start alloc : %lu s\n", a/1000);
tab[j++] = MmAllocPageFrame(20*MB, NORMAL);
b = KeGetTicks();
DebugLog("End alloc : %lu s\n", b/1000);
DebugLog("Alloc time : %lu s\n", (b-a)/1000);
DebugLog("Alloc : %d; Free : %d; Count : %lu Mo\n", NSuccessfulAlloc, NSuccessfulFree, MmBusyPagesSpace() / MB);
j = 0;
a = KeGetTicks();
DebugLog("Start free : %lu ms\n", a);
MmFreePageFrame(tab[j++]);
b = KeGetTicks();
DebugLog("End free : %lu ms\n", b);
DebugLog("Free time : %lu ms\n", (b-a));
DebugLog("Alloc : %d; Free : %d; Count : %lu Mo\n", NSuccessfulAlloc, NSuccessfulFree, MmBusyPagesSpace() / MB);
a = KeGetTicks();
DebugLog("Start map : %lu ms\n", a);
MmMapPageFrame(tab[1], (void*)USERSPACE, PRESENT | USERMODE | READWRITE);
b = KeGetTicks();
DebugLog("End map : %lu ms\n", b);
DebugLog("Map time : %lu ms\n", (b-a));
//printBusyPages();
DebugLog("Finished !\n");
return EOK;